Not to mention the metadata of all that info together
. You can see the structure of a society, who the leaders are and their sphere of influence. In his talk he also mentions the berlin wall and how differently that might've worked out if everybody had a mobile phone att...
On a much much brighter note: Coursera
You can follow entire university courses (Princeton, Stanford et al), including assignments and exams (and a place to ask questions) on a wide range of wildly interesting topics (algorithms, cryptography, machine learning, parralel programming etc etc). Found it through another TED talk
Free education FTW!